Stoker cymndeb



Oct. 27, 1925. A WATHEY 16,192

S TOKER CYLINDER Original File Jixne 5, 1922 2 Sheets-Sheet 1 16,1921925 A. WATHEY e .s'roxmn CYLINDER Original Filed June 5, 1922 2Sheets-Sheet 2 Snow dot Reissued Oct. 27, 1925.

UNITED STATES ARTHUR WATHEY, 0F CLEVELAND, OHII I O.

STOKER CYLINDER.

Original No. 1,500,972, dated July 8, 1924, Serial No. 565,638, filedJune 8, 1922. Application for reissue filed February 4, 1925. Serial No;6,905. i

ers for boiler furnaces, and has for its object to provide an improvedform of cylinder for such stokers.

The cylinders, through which the rains or pushers work for feeding fuelinto the furnace, have heretofore been made of solid or integralcastings, and when holes are worn through the bottoms thereof. which isbound to occur after a certain period of use, it has been necessary totake down the worn retorts and replace them withnew ones at considerableexpense. Not only does the cost of the new complete cylinders and thetime of workmen involve agreat outlay of money, but the furnace must heput out of use for a considerable length of time while the repairs arebeing made. i

It is an aim of the present invention to provide a cylinder for stokerswhich does not have to be entirely replaced when its bottom wears out,so that much of the expense and time required heretofore for makingrepairs is saved and the main portion of cylinder utilized for a muchlonger period than be fore.

Another object of the invention is to provide means in connection with astoker cylinder whereby when the ram operating therein becomesinoperative, defective or worn, the

' same may be readily removed from the cylin- .der and replaced by arepaired or new ram without necessitating the detachment of the cylinderor its associated parts from the furnace, or without taking down ordismem bering the ram operating mechanism.

The invention will be first hereinafter described in connection with theaccompanying drawings, which constitute part of this specification'. andthen more specifically-defined in the claims at the end of thedescription.

In the accompanying drawings, wherein similar reference characters areused to designate corresponding parts throughout the several viewsFigure 1 is a side elevation of a cylinder constructed substantiallyinaccordance with the present invention.

Figure 2 is a front endelevation of the I same.

Figure 3 is a rear end elevation of the cylinder.

Figure 4 is a longitudinal vertical section on the line 44 of Figure 2.

Figure 5 is a transverse vertical section on the line 5 the right, and

Figure 6 is a detailed plan view of the'removable bottom for thecylinder.

The cylinder 1 is preferably made in accordance with the presentpractice, except that instead of having a solid or integral bottom, thebottom 2 is here made as a separable casting which may be readilyapplied to or removed from the cylinder when required, and which iscapable of minute adjustment toward and away from the said cylinder. Thecylinder on its upper side and near one end is provided with a hopper 3through which fuel is fed to the cylinder, and a ram or pusher (notshown) slides longitudinally within the cylinder to force the fuel frombeneath the hopper into the furnace (not shown), as will be understood.

The adjustable and removablebottom 2 may extend substantially throughoutthe ath of the ram or pusher. and as shown best in Figure 4, need notconstitute the entire bottom of the cylinder. Said bottom 2 ispreferably formed of chilled steel, 'at least its upper ram engagingsurface is chilled, in order to render the same more durable. Said uppersurface is channeled to conform to the contour of the interior of thecylinder, and preferably has longitudinal, side members 4 and transversetruss members 5, said side members fitting between corresponding sidemembers 6 extending along thevmargins of the opening 7 in the bottom ofthe cylinder in which said removable bottom 21s arranged, Figur 5. r

The bottom 2 is held in place by bolts 8 engaging outwardly extendingflanges 9 and 10 5 of Figure 1 looking towards respectively on the sidemembers 4- and 6. Between said flanges a plurality of shims or liners11, preferably one-eighth of an inch in thickness, are placed in orderthat as the upper surface of the bottom 2 wears down said shims orliners may be removed one at a time to compensate for said wear.

When the last of the shims or liners has been removed on each side andthe bottom wears entirely through, it may be quickly taken out throughthe opening 7 in the cylinder u on removing the bolts 8 without moving te main upper section of the cylinder, or disturbing the boiler front,coal chute or any other part of the stoker. takes about a week to removesix retorts or cylinders and replace them with entirely new onesaccording to the old practice, the bottoms may be renewed when thepresent invention is used in about three hours.- It will thus be seenthat this invention means a great saving in time and expense and doesaway with the necessity of interrupting vthe use of boilers for longperiods for repairs to the stoker cylinders.

It frequently happens that the ram, through continued operation, becomesworn, which Wear detracts from its'efl'ectiveness. This may becompensated for by adjustment of the bottom casting 2, as the latter, byproper manipulation of its adjusting means canbe moved bodily a properdegree to insure accurate fitting of the cylinder to the worn ram.Should the latter become broken or worn to such degree as to beincapable of further use, it may be bodily removed from the cylinderafter detaching the bottom member 2. In carrying out this operation, itis only necessary to disconnect the ram from its operating means andwithdraw it through the opening 7 The latter opening will be madesufficiently large to permit of the ready withdrawal of the ram throughthe same and the introduction of a new or repaired ram.

I claim 1. The combination in a stoker cylinder,

\Vhereas it of a detachable bottom member approximately semi-circular incross-section adapted to rigidly support the weight of a ram in saidcylinder and means for adjusting said bottom member transversely of thecylinder for the purpose specified.

2. The-combinationin a. stoker cylinder, of a detachable bottom memberapproximately semi-circular in cross-section adapted to rigidly supportthe weight of a ram in said cylinder, and means for adjustin said bottommember transversely of the cylinder, the upper surface of said bottommember being chilled for the purpose specified.

3. The combination in a stoker cylinder, of a detachable bottom memberapproximately semi-circular in cross-section adapted to rigidly supportthe weight of a ram in said cylinder, depending flanges on the'bottommember and adjacent portions of the cylinder, and means for adjustingthe flanges on the bottom member with respect to the flanges on saidadjacent portions for the purpose specified.

l. The combination in a stoker cylinder having an opening in its base,of a bottom member removably'fitted in said opening, depending flangesat the edges of said opening in the cylinder and at the edges of thebottom member, horizontal flanges atthe bases of said depending flanges,means for fastening said bottom member in place, and shims interposedbetween said horizontal flanges for the purpose specified.

5. The combination in a stoker cylinder having an opening in its basethrough which a ram may be inserted or removed, of a detachablebottommember removably fitted in said opening and adapted to rigidly supportthe weight of a ram in said cylinder, and means for adjusting saidbottom member transversely of the cylinder for the purpose specified.

In testimony whereof I hereby afiix my signature.

1 ARTHUR WATHEY.

